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Making Meaning out of MANOVA: The Need for Multivariate Post Hoc Testing in Gifted Education Research
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Smith, Kendal N.; Lamb, Kristen N.; Henson, Robin K. – Gifted Child Quarterly, 2020
Multivariate analysis of variance (MANOVA) is a statistical method used to examine group differences on multiple outcomes. This article reports results of a review of MANOVA in gifted education journals between 2011 and 2017 (N = 56). Findings suggest a number of conceptual and procedural misunderstandings about the nature of MANOVA and its…
Descriptors: Multivariate Analysis, Academically Gifted, Gifted Education, Educational Research
Comparisons of Improvement-Over-Chance Effect Sizes for Two Groups under Variance Heterogeneity and Prior Probabilities
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Henson, Robin K.; Natesan, Prathiba; Axelson, Erika D. – Journal of Experimental Education, 2014
The authors examined the distributional properties of 3 improvement-over-chance, I, effect sizes each derived from linear and quadratic predictive discriminant analysis and from logistic regression analysis for the 2-group univariate classification. These 3 classification methods (3 levels) were studied under varying levels of data conditions,…
Descriptors: Effect Size, Probability, Comparative Analysis, Classification
Variability and Prediction of Measurement Error in Kolb's Learning Style Inventory Scores: A Reliability Generalization Study.
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Henson, Robin K.; Hwang, Dae-Yeop – Educational and Psychological Measurement, 2002
Conducted a reliability generalization study of Kolb's Learning Style Inventory (LSI; D. Kolb, 1976). Results for 34 studies indicate that internal consistency and test-retest reliabilities for LSI scores fluctuate considerably and contribute to deleterious cumulative measurement error. (SLD)
Descriptors: Error of Measurement, Generalization, Meta Analysis, Reliability
Measurement Error of Scores on the Mathematics Anxiety Rating Scale across Studies.
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Capraro, Mary Margaret; Capraro, Robert M.; Henson, Robin K. – Educational and Psychological Measurement, 2001
Submitted the Mathematics Anxiety Rating Scale (MARS) (F. Richardson and R. Suinn, 1972) to a reliability generalization analysis to characterize the variability of measurement error in MARS scores across administrations and identify characteristics predictive of score reliability variations. Results for 67 analyses generally support the internal…
Descriptors: Error of Measurement, Generalization, Mathematics Anxiety, Reliability
Characterizing Measurement Error in Scores across Studies: Some Recommendations for Conducting "Reliability Generalization" Studies.
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Henson, Robin K.; Thompson, Bruce – Measurement and Evaluation in Counseling and Development, 2002
T. Vacha-Haase (1998) proposed her "reliability generalization" methodology to characterize (a) typical score reliability for a measure across studies, (b) the variability of score reliabilities, and (c) what measurement protocol features predict the variability in score reliabilities across administration. The present article provides…
Descriptors: Error of Measurement, Generalization, Psychometrics, Research Methodology
A Reliability Generalization Study of the Teacher Efficacy Scale and Related Instruments.
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Henson, Robin K.; Kogan, Lori R.; Vacha-Haase, Tammi – Educational and Psychological Measurement, 2001
Studied sources of measurement error variance in the Teacher Efficacy Scale (TES) (Gibson and Dembo, 1984). Used reliability generalization to characterize the typical score reliability for the TES and potential sources of measurement error variance across 43 studies. Also examined related instruments for measurement integrity. (SLD)
Descriptors: Error of Measurement, Generalization, Meta Analysis, Psychometrics
Understanding Internal Consistency Reliability Estimates: A Conceptual Primer on Coefficient Alpha.
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Henson, Robin K. – Measurement and Evaluation in Counseling and Development, 2001
Although often ignored, reliability is critical when interpreting study effects and test results. Accordingly, this article focuses on the most commonly used estimate of reliability, internal consistency coefficients, with emphasis on coefficient alpha. An interpretive framework is provided for applied researchers and others seeking a conceptual…
Descriptors: Error of Measurement, Item Analysis, Reliability, Research Methodology